I'm looking for an analytics platform to track users on a cms platform(a web app). I expect most of my traffic to come from mobile users. So I'm looking for a light weight tracking solution that would add very little to my site load time.
I'm looking into server side google analytics libraries such as,
I'm not interested in tracking individual users, but rather just some basic metrics like user drop offs on various pages and tracking button click counts and such. My most important criteria is to make sure the tracking code is as light as possible so as to not slowdown the site load time on a mobile phone.
If I'm looking for tracking options that are faster than the regular client side google analytics. What are some of my other options?